Study on the Performance of Symmcora® Mid-term Suture Versus Novosyn® Suture in Patients Undergoing Robotic Assisted Gastric Bypass Surgery

Time to perform the gastro-jejunal anastomosis and the jejuno-jejunal anastomosis

Number of patients having Anastomotic leak at each examination

Number of patients having Anastomosis stenosis at each examination

Number of patients having Gastric fistula at each examination

Number of patients having obstruction of the anastomosis at each examination

Number of patients having anastomosis bleeding at each examination

Number of other complications classified according to "Clavien-Dindo" classification in order to rank a complication in an objective and reproducible manner. It consists of 7 grades (I, II, IIIa, IIIb, IVa, IVb and V). The introduction of the subclasses a and b allows a contraction of the classification into 5 grades (I, II, III, IV and V) depending on the size of the population observed or the of the focus of a study. Complications that have the potential for long-lasting disability after patient's discharge (e.g.: paralysis of a voice cord after thyroid surgery) are highlighted in the present classification by a suffix ("d" for disability). This suffix indicates that a follow-up is required to comprehensively evaluate the outcome and related long-term quality of life

Number of re-anastomosis at each examination

time from cut to closure in minutes. The time is rounded up and only whole numbers are used

Costs (15 Euro / Operation minute; suture material, number of used sutures, costs / Hospital day)

Number of days after surgery until the patient is discharged from hospital

With the Visual Analogue Scale from 0 mm - 100 mm the satisfaction of the patient will be evaluated with 0 (not satisfied at all) to 100 (very satisfied).

With the Visual Analogue Scale from 0 mm - 100 mm the pain of the patient will be evaluated with 0 (no pain) to 100 (worst pain).

questionnaire a common tool to evaluate patient's outcome and quality of life before and after bariatric surgeries. Three main parameters are evaluated with this tool, the weight, the medical conditions and the quality of life. The weight and the medical conditions will be evaluated by the physician. The questions regarding the quality of life will be answered directly by the patients. The six categories (felling, sexual activities, physical activities, work, food and social contacts) can be answered on scale with 10 steps from very good to very bad.

EQ-5D-5L is a Quality of Life Score introduced by the EuroQol Group. The EQ-5D-5L consists of 2 pages: the EQ-5D descriptive system and the EQ visual analogue scale (EQ VAS).

Descriptive system comprises five dimensions (5D): mobility, self-care, usual activities, pain/discomfort, anxiety/depression. Each dimension has 5 levels (5L): no problems, slight problems, moderate problems, severe problems, extreme problems. Each answer results in a 1-digit number. The digits for the five dimensions can be combined into a 5-digit number that describes the patient's health state.

The EQ VAS records the patient's self-rated health on a vertical visual analogue scale, where the endpoints are labelled 'The best health you can imagine' and 'The worst health you can imagine'.

intra-operatively including different dimensions with 5 evaluations levels (excellent, very good, good, satisfied, poor).

Handling of barbed suture compared to a conventional suture (degree of difficulties and ease of handling) measured in two categories with a 5 point scale (strongly disagree, disagree, neither agree nor disagree, agree, strongly agree)